E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Freischütz (pronounce fry-shoots),
the free-shooter, a legendary German archer in league with the Devil, who gave him seven balls, six of which were to hit infallibly whatever the marksman aimed at, and the seventh was to be directed according to the will of his co-partner. F. Kind made the libretto, and Weber set to music, the opera based on the legend, called Der Freischütz.